| STAMBAUGH NESS WORKFORCE SOLUTIONS, LLCLocation not reported, CT · Withdrawn | Location not reported, CT | LLC | Feb 27, 2019 | Withdrawn |
| PRO MGA SOLUTIONS, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Jul 16, 2019 | Active |
| STAMBAUGH NESS, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Aug 19, 2019 | Active |
| MCCONKEY BENEFITS & FINANCIAL SERVICES, LLCLocation not reported, CT · Active | Location not reported, CT | LLC | Nov 25, 2019 | Active |
| Storage Asset Management Limited Liability CompanyLocation not reported, CT · Active | Location not reported, CT | LLC | Mar 29, 2022 | Active |
| GRAHAM ENGINEERING COMPANY, LLCLocation not reported, CT · Active | Location not reported, CT | LLC | Apr 12, 2022 | Active |
| Kinsley Steel, Inc.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Feb 28, 2023 | Withdrawn |
| The Glatfelter Agency, Inc.Location not reported, CT · Active | Location not reported, CT | Corporation | Jul 19, 2023 | Active |
| SNZweig Advisors, LLCLocation not reported, CT · Active | Location not reported, CT | LLC | Sep 17, 2026 | Active |
| MCN ENTERPRISES LTD.Location not reported, NY · Active | Location not reported, NY | Corporation | Mar 27, 2003 | Active |
| BENNETT WILLIAMS REALTY, INC.Location not reported, NY · Active | Location not reported, NY | Corporation | Apr 1, 2010 | Active |
| MK SOLUTIONS INC.Location not reported, OR · Active | Location not reported, OR | Corporation | May 15, 2015 | Active |
| E.K. MCCONKEY & CO., INC.Location not reported, OR · Active | Location not reported, OR | Corporation | Dec 1, 2017 | Active |
| GLATFELTER UNDERWRITING SERVICES, INC.Location not reported, OR · Active | Location not reported, OR | Corporation | Jun 19, 2018 | Active |
| VOLUNTEER FIREMEN'S INSURANCE SERVICES, INC.Location not reported, OR · Active | Location not reported, OR | Corporation | Jun 19, 2018 | Active |
| VFIS CLAIMS MANAGEMENTLocation not reported, OR · Active | Location not reported, OR | Other | Sep 22, 2020 | Active |
| PRO MGA SOLUTIONS, INC.Location not reported, OR · Active | Location not reported, OR | Corporation | Oct 13, 2020 | Active |
| STAMBAUGH NESS, INC.Location not reported, OR · Active | Location not reported, OR | Corporation | Oct 29, 2020 | Active |
| STAMBAUGH NESS TECHSOLUTIONS, LLCLocation not reported, OR · Active | Location not reported, OR | LLC | Jun 15, 2021 | Active |
| ATOS NORTH AMERICA, INC.Location not reported, OR · Active | Location not reported, OR | Corporation | Aug 24, 2022 | Active |
| MOLIMO, LLCLocation not reported, OR · Active | Location not reported, OR | LLC | Jun 1, 2023 | Active |
| THE GLATFELTER AGENCY, INC.Location not reported, OR · Active | Location not reported, OR | Corporation | Aug 1, 2023 | Active |
| GLATFELTER BROKERAGE SERVICESLocation not reported, OR · Active | Location not reported, OR | Other | Aug 2, 2023 | Active |
| SNZWEIG ADVISORS, LLCLocation not reported, OR · Active | Location not reported, OR | LLC | Sep 17, 2026 | Active |
| BUSINESS INFORMATION GROUP INC.Location not reported, OR · Active | Location not reported, OR | Corporation | Feb 16, 2005 | Active |
| GLATFELTER CLAIMS MANAGEMENT, INC.Location not reported, OR · Active | Location not reported, OR | Corporation | Oct 19, 2001 | Active |
| PRO IS, INC.Location not reported, OR · Active | Location not reported, OR | Corporation | May 21, 2013 | Active |
| Hjkay, Inc.York, PA · Not reported | York, PA | Corporation | Not reported | Not reported |
| Bortner Bros., Inc.York, PA · Not reported | York, PA | Corporation | Not reported | Not reported |
| 1017 Sherman Realty CompanyYork, PA · Not reported | York, PA | Corporation | Not reported | Not reported |
| Catholic Woman's Club of York PaYork, PA · Not reported | York, PA | Nonprofit | Not reported | Not reported |
| Codorus Stone & Supply Co IncYork, PA · Not reported | York, PA | Corporation | Not reported | Not reported |
| Collens-wagner Agency, Inc.York, PA · Not reported | York, PA | Corporation | Not reported | Not reported |
| Covenant Moravian ChurchYork, PA · Not reported | York, PA | Nonprofit | Not reported | Not reported |
| The Glatfelter Agency, Inc.York, PA · Not reported | York, PA | Corporation | Not reported | Not reported |
| Downstairs at the Embers, Inc.York, PA · Not reported | York, PA | Corporation | Not reported | Not reported |
| The East York Columbian Home AssociationYork, PA · Not reported | York, PA | Nonprofit | Not reported | Not reported |
| Stonybrook Bible ChurchYork, PA · Not reported | York, PA | Nonprofit | Not reported | Not reported |
| The Farmers Fire Insurance CompanyYork, PA · Not reported | York, PA | Corporation | Not reported | Not reported |
| First Church of the Brethren of YorkYork, PA · Not reported | York, PA | Nonprofit | Not reported | Not reported |
| First Investors General, IncorporatedYork, PA · Not reported | York, PA | Corporation | Not reported | Not reported |
| Gamlet, Inc.York, PA · Not reported | York, PA | Corporation | Not reported | Not reported |
| Arthur J. Glatfelter Agency, Inc.York, PA · Not reported | York, PA | Corporation | Not reported | Not reported |
| Glen Rock Shooting Club. Inc.York, PA · Not reported | York, PA | Nonprofit | Not reported | Not reported |
| Graham Engineering Company, LlcYork, PA · Not reported | York, PA | LLC | Not reported | Not reported |
| Home Association Letter Carriers Branch 509 and Auxiliary 652 of York, PennsylvaniaYork, PA · Not reported | York, PA | Nonprofit | Not reported | Not reported |
| Michael P. Hoover Company, Inc.York, PA · Not reported | York, PA | Corporation | Not reported | Not reported |
| Keystone Electronics IncYork, PA · Not reported | York, PA | Corporation | Not reported | Not reported |
| M & M Inc. of YorkYork, PA · Not reported | York, PA | Corporation | Not reported | Not reported |
| Misericordia Convalescent HomeYork, PA · Not reported | York, PA | Nonprofit | Not reported | Not reported |